Camera App freezing

[padvou]

Camera app is freezing.
The error in the logs is the same as described here
Log is also attached.

 

[Erel]

Are you running the example in CameraEx thread?
Which device are you using?

When does it happen?

 

[padvou]

Yes, it's a similar project which I could post here.
The device is an 8" tablet.
The freezing occurs either after taking the 1st picture, the 2nd or whenever. I haven't managed to take more than three pictures.

 

[Erel]

Please try it with the example in CameraEx and see whether it happens.

 

[padvou]

dear Erel, it freezes also.
however the built-in camera app don't freeze..
did you figure out anything from the link and the log?

 

[Erel]

Which device are you using?

Seems like you are setting continuous focus mode which your device doesn't support.

 

[padvou]

It'a "Made in PRC" tablet.
How do i disable this?

Log(camEx.GetSupportedFocusModes)

give me this:

(ArrayList) [fixed]

I added this code:

Sub Camera1_Ready (Success As Boolean)
   If Success Then
      camEx.SetJpegQuality(90)
      camEx.SetFocusMode("fixed")
      camEx.CommitParameters
      camEx.StartPreview
      Log(camEx.GetPreviewSize)
   Else
      ToastMessageShow("Cannot open camera.", True)
   End If
End Sub

but still freezing...
And camera is unusable until i reboot.. which poses another question: How could I somehow "restart something" so that I don't restart the whole device?

 

[Erel]

There is a problem in your device camera. CameraEx / Camera library are based on the standard API. Check the logs for any other error.

You can try calling ExitApplication. It might release the camera.

 

[padvou]

This is the error:

E/V4LCameraAdapter(2321): hardware/amlogic/camera/V4LCameraAdapter/V4LCameraAdapter.cpp:834 GetFrame - GetFrame: No buff for Dequeue

E/V4LCameraAdapter(2321): hardware/amlogic/camera/V4LCameraAdapter/V4LCameraAdapter.cpp:993 previewThread - Preview thread get frame fail, need sleep:33333

this is the solution ( the callback must be removed):

camera.setPreviewCallback(new PreviewCallback() {
      public void onPreviewFrame(byte[] data, Camera arg1) {
    //invalidate surfaceview
}
 });

(article from Stackoverflow, but I don't know how to implement it..)

 

[Erel]

Can you post the link to this article?

 

[padvou]

Hi, please take a look at these:
Problem using camera API on Android - Stack Overflow
Android camera freeze issue - Stack Overflow
Or just google this: 834 GetFrame - GetFrame: No buff for Dequeue

 

[Erel]

The first solution is equivalent to removing the Camera_Preview sub from CameraEx.

 

[padvou]

And then? No preview?

 

[padvou]

I tried as you suggested.
Seems to have good results.
I attach the zipped project, if you 'd like to take a look.

 

[Erel]

And then? No preview?

The preview will appear. The Camera_Preview event will not fire.